A car travels 54 km/h for …
CBSE, JEE, NEET, CUET
Question Bank, Mock Tests, Exam Papers
NCERT Solutions, Sample Papers, Notes, Videos
Related Questions
Posted by Anjali Kumari Kumari 1 day, 6 hours ago
- 0 answers
Posted by 🌈 🖤 1 week, 4 days ago
- 2 answers
Posted by 🌈 🖤 1 week, 4 days ago
- 1 answers
Posted by Sara Sunil Kumar 1 week, 5 days ago
- 1 answers
Posted by Gayatri Kumari 1 week, 2 days ago
- 1 answers
Posted by जय श्री राम 3 days, 13 hours ago
- 0 answers
Posted by Sunil Gupta 1 week, 4 days ago
- 1 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Sia ? 4 years, 9 months ago
Conversion:
54 km/hr = 54 {tex}\times \frac{5}{18}{/tex} = 15 m/s
36 km/hr = 36 {tex}\times \frac{5}{18}{/tex} = 10 m/s
18 km/hr = 18 {tex}\times \frac{5}{18}{/tex} = 5 m/s
Now, First,
Speed = 15 m/s and Time = 20 s
Distance = Speed x Time = 15 x 20 = 300 m
Second,
Speed = 10 m/s and Time = 30 s
Distance = 10 x 30 = 300 m
Third,
Speed = 5 m/s and Time = 10 s
Distance = 5 x 10 = 50 m
Now Total Distance = 300 + 300 + 50 = 650 m
Total time = 20 + 30 + 10 = 60 s
Therefore, Average Speed = {tex}\frac{650}{60} = \frac{65}{6}{/tex} m/s
1Thank You